DR LINDA STANNARD, UCT / SCIENCE PHOTO LIBRARY DR LINDA STANNARD, UCT / SCIENCE PHOTO LIBRARY
Herpes simplex virus, coloured transmission electron micrograph (TEM). The virus has an icosahedral capsid (protein coat, yellow/light green, centre left) surrounding a core of DNA (deoxyribonucleic acid) genetic material. The membrane envelope surrounds the capsid and is usually continuous with it, but it has broken away here, giving the virus a "fried-egg" appearance. Herpes simplex is one of the most common viral pathogens in humans. It causes inflammation of the skin and mucous membranes, characterized by fluid-filled blisters. Magnification unknown.
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